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CVE-2016-2179

7.5 · HIGH

The DTLS implementation in OpenSSL before 1.1.0 does not properly restrict the lifetime of queue entries associated with unused out-of-order messages, which allows remote attackers to cause a denia…

Published Sep 16, 2016CWE-399EPSS 26.56%

Overview

CVE-2016-2179 is a high-severity vulnerability. It was published on September 16, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The DTLS implementation in OpenSSL before 1.1.0 does not properly restrict the lifetime of queue entries associated with unused out-of-order messages, which allows remote attackers to cause a denial of service (memory consumption) by maintaining many crafted DTLS sessions simultaneously, related to d1_lib.c, statem_dtls.c, statem_lib.c, and statem_srvr.c.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refkb.juniper.net/InfoCenter/index?page=content&id=JSA10759Refrhn.redhat.com/errata/RHSA-2016-1940.htmlRefwww-01.ibm.com/support/docview.wss?uid=swg21995039Refwww.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.htmlRefwww.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlRefwww.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlRefwww.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlRefwww.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlRefwww.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.htmlRefwww.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-2179?

CVE-2016-2179 is a high-severity vulnerability. It was published on September 16, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2016-2179?

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-2179?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-2179?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-2179 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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